Ami Asai works alongside Shinichi Sakurai at Café Asia, managed by her father, Akihiko Asai. She is a 21-year-old fourth-year university student, sharing classes with Shinichi and Hana Uzaki. Standing 160 cm tall, she has blue hair, brown eyes, typically wears red glasses, and secures her bangs with two hair clips, though her appearance can vary artistically. As café manager alongside her father, she oversees staff including Shinichi. Ami enjoys people-watching, particularly focusing on attractive males and showing a specific appreciation for muscular physiques, often observing Shinichi. She finds his collarbones, upper arms, and athletic build appealing, displaying an intense, focused "dangerous look" when admiring his muscles. Her father sometimes discreetly reminds her to be less overt during customer hours. Despite this fascination, she holds no romantic feelings for Shinichi. Her muscle appreciation can escalate to surprising, comical levels, shocking observers like her father or Itsuhito Sakaki. She takes a keen interest in Shinichi and Hana's evolving relationship, often observing their interactions from afar with her father. They share habits like mimicking eating actions when anticipating developments between the pair. Ami hopes they will become romantically involved and occasionally collaborates with Sakaki to facilitate this, though she generally prefers passive observation over direct action. She playfully teases Hana, sometimes referring to her figure as "a weapon," which can trigger Hana's jealousy when Ami admires Shinichi's physique. Her personality blends curiosity, playfulness, and supportive intent. She is sociable and means well despite occasionally overwhelming actions. As the eldest daughter in the Asai family, her dual role as student and café manager reflects her responsible yet approachable nature. Her consistent traits throughout include "muscle fan" antics and people-watching, contributing to comedic and narrative moments.